Add always-show-image="true|false" attribute to <menuitem> element in UI
manager markup. If present, it overrides the always-show-image property
on image menu items. Bug #589842.
Rework double click handling in GtkTreeView. We cannot blindly use
the 2BUTTON_PRESS and 3BUTTON_PRESS events. In case a user does two
fast double clicks, we receive a 3BUTTON_PRESS and BUTTON_PRESS. We
cannot easily deduce two double clicks from this.
We have removed the bookkeeping using row references of the last paths
clicked. Instead we monitor event time, (x, y) coordinates and compare
against double-click-time and double-click-distance ourselves.
Store (x, y) of last motion event. From
gtk_tree_view_adjustment_changed(), call prelight_or_select() so that
the prelight is recalculated. We do the same from
gtk_tree_view_size_allocate() for the case that clicking on an expander
shows new rows that resize the column(s) left of the expander. This
means that the expander is moved horizontally, in such a case the
prelight also has to be reconsidered.
This should now cause much less of a headache than before. Fields have
been properly reordered, each group has been given a comment. Since the
GtkTreePrivate structure is private (as the name says), this should not
have any effect on ABI.
gtk_tree_model_filter_set_visible_func() is checking for
priv->visible_func, but that is always going to be NULL since there's
no way to call this function twice.
Besides that the code itself is wrong, since it tries to call
priv->visible_destroy without making sure that it's not NULL
Bypassed with #if 0 because it is an awful hack and not really
acceptable from a privacy point of view for instance. It prevents
Firefox from deleting temporary files containing images being dragged,
so they stay on disk. Bug #561973.
